﻿// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// Copyright (c) 2011, Dr. Masroor Ehsan
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the author nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

using System;
using System.IO;
using System.Reflection;

namespace dseScraper
{
    public sealed class BatchNumGenerator
    {
        private static readonly BatchNumGenerator _instance = new BatchNumGenerator();

        private readonly string _currPath =
            Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath);

        private int _current;

        private BatchNumGenerator()
        {
        }

        public static BatchNumGenerator Instance
        {
            get { return _instance; }
        }

        public string CurrPath
        {
            get { return _currPath; }
        }

        public int Next()
        {
            return ++_current;
        }

        public void Reset()
        {
            _current = 0;
        }

        public static string RawFilename(int batch)
        {
            var dateFolder = DateTime.Now.ToString("yyyyMMdd");
            var suffix = DateTime.Now.ToString("HHmm");
            return Path.Combine(
                Path.Combine(
                    Path.Combine(Instance.CurrPath, "rawHtml"),
                    dateFolder),
                string.Format("{0:0000}^{1}.html", batch, suffix));
        }

        public static string QuotesFilename(int batch)
        {
            var dateFolder = DateTime.Now.ToString("yyyyMMdd");
            var suffix = DateTime.Now.ToString("HHmm");
            return Path.Combine(
                Path.Combine(
                    Path.Combine(Instance.CurrPath, "quotes"),
                    dateFolder),
                string.Format("{0:00000}^{1}.csv", batch, suffix));
        }

        public static string MstFilename()
        {
            var filename = DateTime.Now.ToString("yyyyMMdd");
            return Path.Combine(Path.Combine(Instance.CurrPath, "mst"), string.Format("{0}.txt", filename));
        }
    }
}